How To Measure Watch Band Length. Large Apple watch bands are made for wider wrists. Wrap the string around your wrist and make a mark where the two ends meet.

You can check and measure the length of your current watch band without buckle. Smart watch owners can check our table of Common Smart Watch Lug Widths. What is a lug.
If you want to choose the perfect width for your watchband you need to measure the width between the two lugs ideally using a caliper but a simple ruler can also do the trick.
As long as your lug size falls within the range of the millimeter size of the lug it will fit. Smart watch owners can check our table of Common Smart Watch Lug Widths. These lengths can be added to the Apple Watch size to approximately equal the circumference of your wrist give or take a few millimeters. Choose the size of watch appropriately for your wrist.
